Only two commercial instruments exist for copper smelters: the Noranda Pyrometer and the Online Production Control (OPC) system. Successful application of optical spectroscopy can enhance real-time monitoring of chemical processes in copper smelting. Continuing this long tradition of excellence, the Thermo ScientificTM ARL iSparkTM 8860 Metal Analyzer is the trusted standard, which also integrates the latest innovations to provide our customers with the optical emis n all possible copper grades. Only two commercial. In this paper, we report on spectral features emitted by a reaction shaft occurring in flash smelting of copper concentrates containing sulfide copper minerals such as chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4) and pyrite (FeS 2). Different combustion conditions are addressed, such as. The distribution coefficients of minor elements Co, Ni, Zn, Pb, Bi, Sn, Sb, As, Te, Se, Ga, Ge, and In between slag, matte, and spinel phases in industrial copper converting slag samples have been determined by the microanalysis method using the combination of electron probe microanalysis (EPMA). The first one is applied to smelting and converting reactors based on the measurements of the radiation of the oxidation of different copper and iron sulfides.